That was then...this is now...the Russians and Chinese will scream...count on it.
Knowing that NK ships will be boarded, Kim will send out a ship either on a suicide mission (e.g. detonate a chemical or nuclear warhead when boarded) or else the ship will be packed with completely innocuous cargo (e.g. canned milk for babies) or a diplomatic time-bomb (e.g. a high-ranking Chinese or Russian or Iranian muckety-muck).
NK/China/Russia/Iran will then use the incident to justify their next move.
Game on!
Depends, as they've both signed the NPT & NK withdrew from it. Proliferation is not in their national interests...
You afraid of screaming? Have we become so dainty and PC that the thought of somebody screaming will stop us from doing what needs to be done? If so, we might just as well fly white flags on our Naval vessels and run the white flag up the pole at the White House. It's all over.